Medicine and Health Sciences Commons^™

Stress-Induced Changes In Carf Expression Determine Growth Arrest, Apoptosis, Or Malignant Transformation In Cultured Human Cells: Molecular Evidence And Its Application, Mallika Khurana, Rajkumar Singh Kalra, Anupama Chaudhary, Amr Omar, Xiaoshuai Li, Sunil C. Kaul, Renu Wadhwa

Research Symposium

Background: CARF (Collaborator of ARF)/CDKN2AIP is an essential protein, first cloned as a binding partner of ARF. It was subsequently shown to interact with p53, HDM2 proteins and regulate growth arrest and apoptosis by its multimodal mechanism of action. Over-expression of CARF caused senescence like growth arrest of cells, its knock-down triggered apoptosis. Intriguingly, malignantly transformed cells showed high level of CARF expression. Based on these findings, we hypothesized that level of CARF expression may be a key determinant of cell proliferation fates; where an increase in its levels causes growth arrest/senescence, but beyond a threshold it activates carcinogenesis.

Methods: …

Piperine Encourages Apoptosis In Human Cervical Adenocarcinoma Cells Through Ros Generation, Dna Fragmentation, Caspase-3 Activation And Cell Cycle Arrest, Asif Jafri, Juhi Rais, Sudhir Kumar, Md Arshad

Research Symposium

Background: Cancer is one of the most common destructive diseases and the second leading cause of death in humans. Among cancer, cervical cancer is the second most common malignancy among women globally. Thus, there is a continuous need to search for chemotherapeutic chemicals or naturally occurring drugs to resolve this global health problem. Piperine (1-piperoylpeperdine) is present in the fruits of black pepper (Piper nigrum Linn.) and long pepper (Piper longum Linn.). It possesses several pharmacological properties and in the present study we have evaluated its anti-cancer potential on human cervical adenocarcinoma (HeLa) cells.

Methods: The anti-proliferative effect …

Cyclophosphamide And Epirubicin Induce Apoptotic Cell Death In Microglia Cells, Rafael De La Hoz-Camacho

Research Symposium

Background. Chemotherapy Related Cognitive Impairment’s (CRCI), diminish patient’s quality life, being breast cancer (BC) patients the most affected. Microglia is described to play a major role in CRCI; hence, the aim of this research was to describe the cytotoxicity of cyclophosphamide (CTX) and Epirubicin (EPI), on microglia (SIM-A9), compared to BC cells (4T1).

Methods. We assessed cell viability (Resazurin) and cell death (AnnV), as well as nuclear damage with γ-H2AX, p53, p16 and cell cycle analysis (PI staining) by flow cytometry (FC). Furthermore, we evaluated ΔΨm (DIOC6), ROS (DCFDA) and NO (DAF-FM) production. Finally, caspase activation (TF2-VAD-FMK) and autophagy (CYTO-ID). …

Molecular Event In Hrp Apoptosis, Laura Valdez

Research Symposium

Background: Human retinal pericytes (HRP) are contractile cells adjacent to and provide support for endothelial cells (EC) of capillaries, which are essential in the regulation of retinal vasculature. Early stages of DR are characterized by the loss of HRP, which leads to the development of advanced-stage pathology including angiogenesis. Although much is known about the etiology of DR, the apoptotic pathway that incites HRP loss remains unclear. Our preliminary studies reveal that monocyte-derived macrophages secrete TGF-β1, which induces the expression and secretion of a TGF-β1-Induced, pro-apoptotic BIGH3 protein (TGF-β–Induced Gene Human Clone 3) leading to apoptosis of HRP Eye, 30(12), …

High Energy Blue Light Induces Oxidative Stress And Retinal Cell Apoptosis, Jessica Malinsky

Capstone Showcase

Blue light (BL) is a high energy, short wavelength spanning 400 to 500 nm. Found in technological and environmental forms, BL has been shown to induce photochemical damage of the retina by reactive oxygen species (ROS) production. Excess ROS leads to oxidative stress, which disrupts retinal mitochondrial structure and function. As mitochondria amply occupy photoreceptors, they also contribute to oxidative stress due to their selectively significant absorption of BL at 400 to 500 nm. ROS generation that induces oxidative stress subsequently promotes retinal mitochondrial apoptosis. BL filtering and preventative mechanisms have been suggested to improve or repair BL-induced retinal damage, …